ninja: Update version from 1.7.2. to 1.8.2

[Announcement][1]:

> […]
>
> This is a major release after v1.7.2, mainly for performance
> improvements, support for more path components, and several bugfixes.
>
> […]

[1] https://groups.google.com/forum/#!topic/ninja-build/Xt3NdAA0KQU/discussion

ninja.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION ninja-1.7.2-0
+# BEE_VERSION ninja-1.8.2-0
 
 ## this file was created by bee init and should be executed to build a
 ## bee-package. (Additional hints are located at the end of this file.)